论文标题
在光线超流体中对湍流相干结构的实验性观察
Experimental observation of turbulent coherent structures in a superfluid of light
论文作者
论文摘要
我们在实验中探索了在全光构型中的障碍物中，在超过的超富光的湍流中产生的各种非线性相干结构。观察到的不同的流体动力状态是在涉及流动速度和障碍物直径的独特相图中组织的。然后，我们通过研究其强度谱和核心半径对愈合长度的依赖性，将重点放在遇到障碍物之后成核的涡旋上。我们的结果为光子超流体中湍流的进一步研究铺平了道路，并提供了多功能的实验工具，用于用非线性光模拟量子传输。
We experimentally explore the rich variety of nonlinear coherent structures arising in a turbulent flow of superfluid light past an obstacle in an all-optical configuration. The different hydrodynamic regimes observed are organised in a unique phase diagram involving the velocity of the flow and the diameter of the obstacle. Then, we focus on the vortices nucleated in the wake of the obstacle by investigating their intensity profile and the dependence of the radius of their core on the healing length. Our results pave the way for further investigations on turbulence in photon superfluids and provide versatile experimental tools for simulating quantum transport with nonlinear light.
